Step 6 Burn-out
The ceramic shell is placed into a kiln and fired. The
shell is baked and hardened while wax model is melted and
drained away from the shell. Here the wax is lost (thus the
name lost wax process) and a hollow ceramic mold is created.
The molten wax is then collected and recycled for future use.
Step 7 Casting
The molten bronze is poured into the ceramic shell immediately
after the shell is removed from the kiln. The molten bronze is
at 2100° Fahrenheit at the time of the pouring.
Step 8 Break-Out
After the bronze has a chance to cool down (usually several
hours) the shell is carefully broke away leaving the unfinished
bronze.
Step 9 Sandblasting
The sculpture is carefully inspected at this point. Any
ceramic shell fragments are removed by sand blasting.
Step 10 Assembly
All the pieces of the sculpture is welded together by
skillful craftsman.
Step 11 Chasing
The weld marks are re-detailed by skillful craftsman.
Step 12 Glass Beading
This process is similar to the sandblasting, however the
glass beads are extremely fine and ensure a smooth bronze finish.
|